adverb, adverb taking the 'to' particle
with gusto; freely; without restraint
Describes doing something energetically, boldly, or without hesitation, often with a sense of not holding back. Onomatopoeic.
彼はジャカスカとお金を使う。
He spends money freely.
ジャカスカ意見を言ってください。
Please speak your mind without restraint.